DP Pumps Hydro-Unit Premium Line F, Инструкция по установке и эксплуатации

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4. Check the pre-charge pressure using suitable equipment (e.g. tyre pressure gauge).
5. Fit the protective cap of the membrane-type accumulator valve.
Filling the membrane-type accumulator
1. Remove and store the protective cap of the membrane-type accumulator valve.
2. Add nitrogen through the valve.
3. Fit the protective cap of the membrane-type accumulator valve.
8.2.5 Replacing the non-return valve
DANGER
Voltage at the pressure booster system
Danger to life!
Ø Prior to opening the device, wait at least 10 minutes for any residual
voltage to dissipate.
1. De-energise the pump set and secure it against unintentional start-up. Comply with the
local regulations.
2. Close the shut-off valve of the pump.
3. Place a suitable container under the drain connection.
4. Open the drain connections. To do so, observe the pump's operating manual.
Fig. 13:
Removing the screw
5. Remove the screw.
Fig. 14:
Screwing the valve's body parts into each other
6. Use a suitable tool to screw the body parts of the non-return valve into each other to
shorten the length of the body.